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7-11.

Copy each part below on your paper. Then use the number line to help you fill in (less than) or (greater than) on the blank line.  

A number line, with marks labeled as follows: negative 15, negative 10, negative 5, 0, 5, 10, 15.

Numbers increase from left to right and decrease from right to left.

  1.             

    Locate and on the number line.

    Since  is to the left of and numbers decrease from right to left, that means to is less than .

  1.             

    See part (a).

  1.             

    See part (a).

  1.             

    See part (a).